About 70 of Bhutanese practice Buddhism and rest are Hindu, although there are still a few priests and followers of the ancient Bon religion and there are a small number of Christians. While the law provides for religious freedom, the Drukpa sect of the Kagyupa School, a branch of Mahayana Buddhism, is the state religion, and the law prohibits religious conversions. This sect incorporates both the ideology of the classical Buddhist scriptures and the indigenous pre-Buddhist animistic beliefs called Bon.